Air Filters Incorporated™ Astro-Pleat™ MERV 8 seasonal 1-Inch pleated air filters effectively reduce/remove pollen, dust, pet dander and dust mites for circulated indoor air. Filtering these airborne particles can help alleviate allergies and sinus irritation that can cause watery eyes, itchy throat, coughing, and sneezing. Additional benefits are extending the life of your Air Conditioning / Furnace system by allowing the system to work more efficiently and economically.